Question

двигаясь равноускоренно без начальной скорости,тело,пройдя некоторый путь,приобрело скорость v=14 м/с.чему была равна скорость тела,когда оно прошло половину этого пути

Answer 1

Скорость вычисляется по формуле  V = √ (2 * a * S), то есть скорость пропорциональна корню из пройденного пути.

В данном случае скорости после прохождения телом половины пути была равна

14 / √ 2 ≈ 14/1,41≈ 9,92 м/с.

Ответ: примерно 9,92 м/c, можно взять и 9,9 м/c

Answer 2

Calculating the Speed of an Object

To calculate the speed of the object when it has covered half of the distance, we can use the equations of motion. Given that the object is moving with constant acceleration and without an initial velocity, we can use the following equation:

v^2 = u^2 + 2as

Where: - v = final velocity - u = initial velocity - a = acceleration - s = distance

We are given that the final velocity v is 14 m/s. Now, we can calculate the initial velocity u when the object has covered half of the distance.

Calculation

Using the equation v^2 = u^2 + 2as, and given that the final velocity v is 14 m/s, we can calculate the initial velocity u when the object has covered half of the distance.

v^2 = u^2 + 2as

Given that the distance covered is s, the distance covered when the object has covered half of the total distance is s/2.

Solution

Using the given information, we can calculate the initial velocity u when the object has covered half of the distance:

14^2 = u^2 + 2a(s/2)

Now, we can solve for u using the provided acceleration value and the distance covered.

Answer

The speed of the object when it has covered half of the distance can be calculated using the equation v^2 = u^2 + 2as. The initial velocity u can be determined using the given final velocity v and the distance covered.